AUTOFLAME Mk8 MM Installation And Commissioning Guide

3 Water Level Control
Page 54 Mk8 MM Expansion Features Installation and Set-Up Guide 04.09.2016
3.8 Commissioning Procedure
3.8.1 Commissioning Checks
When commissioning a burner with Autoflame water level cotnrol, the water level probes and external
water level sensor must be commissioned initially before the combustion curve is put in. Once the
burner is commissioned with the Mk8 MM, the water level probes will need to be recommissioned once
the boiler is up to pressure, and water in the boiler is hot enough.
**WARNING**
ANY PERSON WORKING ON A BOILER MUST BE ADEQUATELY TRAINED AND
HAVE A THOROUGH APPRECIATION OF THE BOILER PLANT. IT IS THE
RESPONSIBILITY OF THE FACTORY TRAINED TECHNICIAN TO ENSURE THAT THE
SYSTEM OPERATION MEETS LOCAL CODES AND REGULATIONS.
When all the installation and burner adjustments are completed, the entire burner control system
should be tested in accordance with the manufacturer’s instructions. The procedure should verify the
correct operation of:
1. Each operating control (temperature, pressure etc.)
2. Each limit switch (temperature, pressure, low water cut-off, etc.)
3. Each interlock switch (airflow switch, high and low fuel pressure or temperature switches,
purge and low fire switches, fuel valve proof of closure interlock etc.)
4. Pilot flame failure response and lockout.
5. Main flame failure response and lockout.
6. Tight shut-off for all valves.
Please refer to section 3.4.4 for the Installation and Safety Guidelines.
3.8.2 Levels
End of Probe: The end of probe level is used to identify the point below which the probe cannot obtain
a valid water level, it has no operational use.
High: A high water level, although not dangerous is undesirable as water may infiltrate the steam
header. If the boiler water level goes above this point the burner may or may not continue to run
depending on the system configuration. If a high water level condition is detected high water audible
and visual indicators are activated to notify the user. The audible indicator may be muted by means of
the mute/reset push button. The burner can be set continue or stop firing at high water in expansion
option 9.
Control Point: This is the ideal water level the feed water control will try to maintain.
1st Low: A 1st low water level is a point below the control point at which the burner will turn off. If the
water level falls below this point 1
st
low audible and visual indicators are activated. The audible
indicator may be muted by means of the mute/reset push button. If the water level is restored above
this point the burner will start automatically and all indicators will also be reset.
2
nd
Low: A 2
nd
low water level is a point below 1st low at which the burner will remain off. If the water
level falls below this point 2
nd
low audible and visual indicators are activated. The audible indicator
may be muted by means of the mute/reset push button. Even if the water level is restored above this
point the burner will remain off. Operator intervention is required to manually reset the system and can
only be performed once the level is above the 2
nd
low point. The 2
nd
low reset condition is non-volatile -
if the system is powered down the reset condition will remain when power is reapplied. In this scenario
the operator reset will still be necessary.

AUTOFLAME Mk8 MM Specifications

General

Brand	AUTOFLAME
Model	Mk8 MM
Category	Controller
Language	English